Federal Agency Unveils Three Potential Osteoarthritis Treatments  The New York TimesGoodbye, knee pain. In a medical first, scientists have found a way to regrow damaged cartilage.  YahooNew Research Brings Joint Repair Closer for Millions With Osteoarthritis  Duke HealthA simple shot shows promise to reverse osteoarthritis within weeks  University of Colorado BoulderStunning Stanford study finds way to regrow joint cartilage. Could it mean an end to osteoarthritis?  KTVU